Aero Manual |
Häufige Begriffe und Wortgruppen
aeronautical aeroplane airship aluminium angle of incidence Antoinette apparatus attached aviation balloon bamboo biplane bird Bleriot blowing camshaft carburetter carried centre of gravity centre of pressure Chanute Clément-Bayard connecting rods constructed crank crankcase crankshaft curved cylinders degrees direction dirigible distance driving eight-cylinder elevation rudder engine experimenters flying machine forward frame France front edge Gabriel Voisin gear gliding ground head resistance Henry Farman hill horizontal human flight ignition inclined inlet kite length less lever Lilienthal London Louis Bleriot lower magneto main planes main shaft method metres miles an hour miles per hour monoplane motor mounted move movement obtained operator petrol pilot pistons placed position possible propeller rear revolutions rising current screw side slope soaring speed steel steering stroke surface tail tion turn upward valve velocity vertical rudder Voisin aeroplane weight wheel Wilbur Wright wind wire Wright aeroplane Wright Brothers
Beliebte Passagen
Seite 13 - My own active interest in aeronautical problems dates back to the death of Lilienthal in 1896. The brief notice of his death which appeared in the telegraphic news at that time aroused a passive interest which had existed from my childhood, and led me to take down from the shelves of our home library a book on Animal Mechanism by Prof.
Seite 13 - If to your starboard RED appear, It is your duty to keep clear ; To act as judgment says is proper ; To Port — or Starboard — Back — or, Stop her ! But when upon your Port is seen A Steamer's Starboard Light of GREEN, There's not so much for you to do, For GREEN to Port keeps clear of you.
Seite 13 - ... 3. That, in arched surfaces, the centre of pressure at 90 degrees is near the centre of the surface, but moves slowly forward as the angle becomes less, till a critical angle varying with the shape and depth of the curve is reached, after which it moves rapidly toward the rear till the angle of no lift is found.
Seite 13 - ... able to obtain any adequate practice. We figured that Lilienthal in five years of time had spent only about five hours in actual gliding through the air. The wonder was not that he had done so little, but that he had accomplished so much. It would not be considered at all safe for a bicycle rider to attempt to ride through a crowded city street after only five hours...
Seite 13 - ... of pressure. The machine then sailed off and made an undulating flight of a little more than 300 feet. To the onlookers this flight seemed very successful, but to the operator it was known that the full power of the rudder had been required to keep the machine from either running into the ground or rising so high as to lose all headway.
Seite 13 - ... twisting the wings so as to present their ends to the wind at different angles is a more prompt and efficient way of maintaining lateral equilibrium than shifting the body of the operator.
Seite 13 - Chanute double-deck plan, and a smaller surface placed a short distance in front of the main surfaces in such a position that the action of the wind upon it would counterbalance the effect of the travel of the center pressure on the main surfaces.
Seite 13 - This time the velocity of the wind was 18 to 22 miles per hour. At first we felt some doubt as to the safety of attempting free flight in so strong a wind, with a machine of over 300 square feet, and a practice of less than five minutes spent in actual flight. But after several preliminary experiments we decided to try a glide. The control of the machine seemed so good that we then felt no apprehension in sailing boldly forth. And thereafter we made glide after glide, sometimes following the ground...
Seite 13 - By long practice the management of a flying machine should become as instinctive as the balancing movements a man unconsciously employs with every step in walking, but, in the early days, it is easy to make blunders. For the purpose of reducing the danger to the lowest possible point we usually kept close to the ground. Often, a glide of several hundred feet would be made at a height of a few feet or even a few inches sometimes.
Seite 13 - ... on account of this action on the upper side; but he seems never to have investigated the curvature and angle at which the phenomena entirely cease. My brother and I had never made any original investigation of the matter, but assumed that a curvature of one in twelve would be safe, as this was the curvature on which Lilienthal based his tables. However, to be on the safe side, instead of using the arc of a circle, we had made the curve of our machine very abrupt at the front, so as to expose...